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linux/drivers/media/video
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Ian Armstrong b6e436b263 V4L/DVB: ivtv: Fix race condition for queued udma transfers 
There are several DMA related interrupts which wake up the dma_waitq. The udma
routines use this queue while they wait for their transfer to complete. When
woken, the udma routine will check the IVTV_F_I_UDMA_PENDING & IVTV_F_I_UDMA
flags to see if the transfer is still queued or has finished. However, a small
window exists between the IVTV_F_I_UDMA_PENDING flag being cleared and the
IVTV_F_I_UDMA flag being set. Given that the completion of an unrelated DMA
transfer may wake up the udma routine, it's possible for this check to fail
and the udma routine will start unmapping pages when the transfer has only
just started. The result of this is unpredictable.

This fix simply delays the clearing of the IVTV_F_I_UDMA_PENDING flag until
after IVTV_F_I_UDMA has been set.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:41 -03:00
..
au0828 V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
bt8xx V4L/DVB (13680): ir: use unsigned long instead of enum 2010-02-26 15:10:24 -03:00
cpia2 V4L/DVB (13594): cpia2: use __stringify macro. 2009-12-16 00:18:31 -02:00
cx18 V4L/DVB (13968): cx18, fix potential null dereference 2010-02-26 15:10:35 -03:00
cx88 V4L/DVB (13680): ir: use unsigned long instead of enum 2010-02-26 15:10:24 -03:00
cx231xx V4L/DVB (13634): ir-core: allow passing IR device parameters to ir-core 2010-02-26 15:10:23 -03:00
cx23885 V4L/DVB (13959): cx23885/cx23885-dvb.c: use %pM to show MAC address 2010-02-26 15:10:34 -03:00
cx25840 V4L/DVB (13232): cx25840 6.5MHz carrier detection fixes 2009-12-05 18:41:01 -02:00
davinci V4L/DVB: Davinci VPFE Capture: remove unused #include <linux/version.h> 2009-12-16 09:27:57 -02:00
em28xx V4L/DVB (13961): em28xx-dvb: fix memleak in dvb_fini() 2010-02-26 15:10:34 -03:00
et61x251 V4L/DVB (14005): media/video Kconfig: Mark gspca superceeded drivers as deprecated 2010-02-26 15:10:41 -03:00
gspca V4L/DVB (14003): gspca_cpai1: New gspca subdriver for CPIA CPiA version 1 cams 2010-02-26 15:10:40 -03:00
hdpvr V4L/DVB (13685): Correct code taking the size of a pointer 2009-12-16 09:27:55 -02:00
ivtv V4L/DVB: ivtv: Fix race condition for queued udma transfers 2010-02-26 15:10:41 -03:00
ovcamchip V4L/DVB (11304): v4l2: remove v4l2_subdev_command calls where they are no longer needed. 2009-03-30 12:43:49 -03:00
pvrusb2 V4L/DVB (13550): v4l: Use the new video_device_node_name function 2009-12-16 00:17:55 -02:00
pwc V4L/DVB: Video : pwc : Fix regression in pwc_set_shutter_speed caused by bad constant => sizeof conversion. 2010-02-19 03:19:02 -02:00
saa7134 V4L/DVB (13945): Add lost config and PCI ID for card of Beholder 2010-02-26 15:10:32 -03:00
saa7164 V4L/DVB (12930): Wrong variable tested 2010-02-26 15:10:34 -03:00
sn9c102 V4L/DVB (14005): media/video Kconfig: Mark gspca superceeded drivers as deprecated 2010-02-26 15:10:41 -03:00
usbvideo V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
usbvision V4L/DVB (13954): Correct NULL test 2010-02-26 15:10:33 -03:00
uvc V4L/DVB (13830): uvcvideo: add another YUYV format GUID for iSight cameras 2010-02-26 15:10:25 -03:00
zc0301 V4L/DVB (14005): media/video Kconfig: Mark gspca superceeded drivers as deprecated 2010-02-26 15:10:41 -03:00
zoran V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
adv7170.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
adv7175.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
adv7180.c V4L/DVB (13176): adv7180: Support checking standard via interrupts 2009-12-05 18:40:43 -02:00
adv7343.c V4L/DVB (12201): adv7343: remove unused #include <linux/version.h> 2009-09-19 00:18:07 -03:00
adv7343_regs.h V4L/DVB (11743): Analog Devices ADV7343 video encoder driver 2009-06-16 18:20:59 -03:00
arv.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
bt819.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
bt856.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
bt866.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
btcx-risc.c
btcx-risc.h
bw-qcam.c V4L/DVB (12438): Read buffer overflow 2009-08-13 20:39:14 -03:00
bw-qcam.h
c-qcam.c V4L/DVB (13550): v4l: Use the new video_device_node_name function 2009-12-16 00:17:55 -02:00
cafe_ccic-regs.h
cafe_ccic.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
cpia.c V4L/DVB (13590): cpia: convert it to use proc_fops 2009-12-16 00:18:23 -02:00
cpia.h
cpia_pp.c
cpia_usb.c
cs53l32a.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
cs5345.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
cs8420.h
cx2341x.c V4L/DVB (12104): ivtv/cx18: fix regression: class controls are no longer seen 2009-06-23 03:14:31 -03:00
dabusb.c Driver-Core: fix devnode callbacks for dabusb and industrialio 2009-09-21 07:36:33 -07:00
dabusb.h
font.h
hexium_gemini.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
hexium_orion.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
ibmmpeg2.h
indycam.c V4L/DVB (10866): saa7191, indycam: remove compat code. 2009-03-30 12:43:11 -03:00
indycam.h V4L/DVB (10861): vino/indycam/saa7191: convert to i2c modules to V4L2. 2009-03-30 12:43:10 -03:00
ir-kbd-i2c.c V4L/DVB (13680): ir: use unsigned long instead of enum 2010-02-26 15:10:24 -03:00
Kconfig V4L/DVB (14004): drivers/media/video/Kconfig: Turn deprecated drivers off by default 2010-02-26 15:10:40 -03:00
ks0127.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
ks0127.h V4L/DVB (10730): v4l-dvb: cleanup obsolete references to v4l1 headers. 2009-03-30 12:42:59 -03:00
m52790.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
Makefile V4L/DVB (13670): soc-camera: Add mt9t112 camera driver 2009-12-16 09:27:41 -02:00
meye.c kfifo: fix warn_unused_result 2009-12-22 14:17:56 -08:00
meye.h kfifo: move struct kfifo in place 2009-12-22 14:17:55 -08:00
msp3400-driver.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
msp3400-driver.h V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
msp3400-kthreads.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
mt9m001.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
mt9m111.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
mt9t031.c V4L/DVB (13662): mt9t031: make the use of the soc-camera client API optional 2009-12-16 09:27:31 -02:00
mt9t112.c soc-camera: mt9t112: modify exiting conditions from standby mode 2010-02-19 03:19:01 -02:00
mt9v011.c V4L/DVB (12401): m9v011: add vflip/hflip controls to control mirror/upside down 2009-08-13 20:39:08 -03:00
mt9v011.h V4L/DVB (12340): mtv9v011: Add a missing chip version to the driver 2009-08-13 20:39:02 -03:00
mt9v022.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
mx1_camera.c V4L/DVB mx1_camera: don't check platform_get_irq's return value against zero 2010-01-17 11:31:37 -02:00
mx3_camera.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
mxb.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
mxb.h
omap24xxcam-dma.c
omap24xxcam.c V4L/DVB (13557): v4l: Remove unneeded video_device::minor usage in drivers 2009-12-16 00:17:58 -02:00
omap24xxcam.h
ov511.c V4L/DVB (13596): ov511.c typo: lock => unlock 2009-12-16 00:18:33 -02:00
ov511.h V4L/DVB (11966): ov511: Fix unit_video parameter behavior 2009-06-16 19:07:40 -03:00
ov772x.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
ov7670.c V4L/DVB (11117): ov7670: add support to get/set registers 2009-03-30 12:43:30 -03:00
ov9640.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
ov9640.h V4L/DVB (13040): V4L2: Add a v4l2-subdev (soc-camera) driver for OmniVision OV9640 sensor 2009-12-05 18:40:01 -02:00
pms.c V4L/DVB (13698): pms: replace asm/uaccess.h to linux/uaccess.h 2009-12-16 09:28:01 -02:00
pxa_camera.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
rj54n1cb0c.c V4L/DVB (13951): rj54n1cb0: Storage class should be before const qualifier 2010-02-26 15:10:33 -03:00
s2255drv.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
saa711x_regs.h
saa717x.c V4L/DVB (13396): correct initialization of audio_mode 2009-12-05 18:41:40 -02:00
saa5246a.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
saa5249.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
saa6588.c V4L/DVB (12215): saa6588: conform to the final RDS spec. 2009-09-12 12:17:31 -03:00
saa7110.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
saa7115.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
saa7121.h
saa7127.c V4L/DVB (13913): saa7127: Add support for generating SECAM output for the SAA712[89] chips 2010-02-26 15:10:30 -03:00
saa7146.h V4L/DVB (10907): avoid loading the entire videodev.h header on V4L2 drivers 2009-03-30 12:43:15 -03:00
saa7146reg.h
saa7185.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
saa7191.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
saa7191.h V4L/DVB (10861): vino/indycam/saa7191: convert to i2c modules to V4L2. 2009-03-30 12:43:10 -03:00
se401.c V4L/DVB (13550): v4l: Use the new video_device_node_name function 2009-12-16 00:17:55 -02:00
se401.h V4L/DVB (11998): se401: Fix coding style 2009-06-16 19:07:54 -03:00
sh_mobile_ceu_camera.c V4L/DVB sh_mobile_ceu: don't check platform_get_irq's return value against zero 2010-01-17 11:31:37 -02:00
soc_camera.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
soc_camera_platform.c V4L/DVB (13659): soc-camera: convert to the new mediabus API 2009-12-16 09:27:29 -02:00
soc_mediabus.c V4L/DVB (13658): v4l: add a media-bus API for configuring v4l2 subdev pixel and frame formats 2009-12-16 09:27:27 -02:00
stk-sensor.c
stk-webcam.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
stk-webcam.h
stradis.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
stv680.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
stv680.h
tcm825x.c V4L/DVB (12111): tcm825x: remove incorrect __exit_p wrapper 2009-06-23 03:14:48 -03:00
tcm825x.h V4L/DVB (10628): V4L: Storage class should be before const qualifier 2009-03-30 12:42:48 -03:00
tda7432.c V4L/DVB (11564): tda7432: Delete old driver history 2009-06-16 18:20:36 -03:00
tda9840.c V4L/DVB (11372): v4l2: use old-style i2c API for kernels < 2.6.26 instead of < 2.6.22 2009-04-06 21:44:23 -03:00
tda9875.c V4L/DVB (11302): tda9875: remove legacy code for old-style i2c API 2009-03-30 12:43:48 -03:00
tea6415c.c V4L/DVB (11737): Drop stray references to i2c_probe 2009-06-16 18:20:58 -03:00
tea6415c.h
tea6420.c V4L/DVB (11737): Drop stray references to i2c_probe 2009-06-16 18:20:58 -03:00
tea6420.h
ths7303.c V4L/DVB (11742): TI THS7303 video amplifier driver code 2009-06-16 18:20:59 -03:00
tlv320aic23b.c V4L/DVB (11304): v4l2: remove v4l2_subdev_command calls where they are no longer needed. 2009-03-30 12:43:49 -03:00
tuner-core.c V4L/DVB (13964): tuner-core, fix memory leak 2010-02-26 15:10:34 -03:00
tvaudio.c V4L/DVB (13166): remove duplicate structure field initialization 2009-12-05 18:40:40 -02:00
tveeprom.c V4L/DVB (13958): tveeprom.c: use %pM to show MAC address 2010-02-26 15:10:34 -03:00
tvp514x.c V4L/DVB (13292): tvp514x: recognize the error case in tvp514x_read_reg() 2009-12-05 18:41:13 -02:00
tvp514x_regs.h V4L/DVB (12246): tvp514x: Migration to sub-device framework 2009-09-19 00:18:09 -03:00
tvp5150.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
tvp5150_reg.h
tw9910.c V4L/DVB (13669): tw9910: Add sync polarity support 2009-12-16 09:27:40 -02:00
upd64031a.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
upd64083.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
v4l1-compat.c V4L/DVB (12948): v4l1-compat: fix VIDIOC_G_STD handling 2009-09-19 00:15:25 -03:00
v4l2-common.c V4L/DVB (13618): v4l2: Adding helper function to get dv preset description 2009-12-16 00:18:47 -02:00
v4l2-compat-ioctl32.c V4L/DVB: use correct size in put_v4l2_window32() 2010-02-26 15:10:32 -03:00
v4l2-dev.c V4L/DVB (13552): v4l: Replace video_is_unregistered with video_is_registered 2009-12-16 00:17:55 -02:00
v4l2-device.c V4L/DVB (11936): Fix v4l2-device usage of i2c_unregister_device() 2009-06-16 19:07:26 -03:00
v4l2-int-device.c
v4l2-ioctl.c V4L/DVB (13571): v4l: Adding Digital Video Timings APIs 2009-12-16 00:18:03 -02:00
videobuf-core.c V4L/DVB (13415): videobuf-core: explicitly cast page count 2009-12-05 18:41:46 -02:00
videobuf-dma-contig.c V4L/DVB (13598): videobuf_dma_contig_user_get() for non-aligned offsets 2009-12-16 00:18:34 -02:00
videobuf-dma-sg.c V4L/DVB (13377): make struct videobuf_queue_ops constant 2009-12-05 18:41:35 -02:00
videobuf-dvb.c V4L/DVB (13103): create a standard method for dvb adapter drivers to override frontend ioctls 2009-12-05 18:40:21 -02:00
videobuf-vmalloc.c V4L/DVB (13417): Fix videobuf_queue_vmalloc_init() prototype 2009-12-05 18:41:47 -02:00
vino.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
vino.h
vivi.c V4L/DVB (13944): vivi: Fix test of unsigned in vivi_create_instance() 2010-02-26 15:10:32 -03:00
vp27smpx.c V4L/DVB (11370): v4l2-subdev: move s_std from tuner to core. 2009-04-06 21:44:22 -03:00
vpx3220.c V4L/DVB (13241): Cleanup redundant tests on unsigned 2009-12-05 18:41:04 -02:00
w9966.c V4L/DVB (10907): avoid loading the entire videodev.h header on V4L2 drivers 2009-03-30 12:43:15 -03:00
w9968cf.c V4L/DVB (13556): v4l: Remove unneeded video_device::minor assignments 2009-12-16 00:17:57 -02:00
w9968cf.h V4L/DVB (11377): v4l: increase version numbers of drivers converted to v4l2_subdev. 2009-04-06 21:44:26 -03:00
w9968cf_decoder.h
w9968cf_vpp.h
wm8739.c V4L/DVB (11304): v4l2: remove v4l2_subdev_command calls where they are no longer needed. 2009-03-30 12:43:49 -03:00
wm8775.c V4L/DVB (11380): v4l2-subdev: change s_routing prototype 2009-04-06 21:44:27 -03:00
zr364xx.c V4L/DVB (13885): zr364xx: fix support for Aiptek DV T300 2010-02-26 15:10:28 -03:00